I'm currently setup in 2 channel stereo.  I was wondering if when I install the surround card can I install a powered subwoofer into the center/sub output and have 2.1 channels with some kind subwoofer crossover or subwoofer volume control in the NU audio panel?  I have klipsch 2.1 pro media desktop speakers (left and right speakers disconnected).  The Left and right channel output from the nu audio card is connected to a splitter with one going into the left and right input of the mini amp and the other L/R signal going into an rca-to-3.5mm female audio jack that is connected to the klipsch 2.1 pro media soley for the subwoofer use cos both the left and right klipsch speakers are disconnected from the powered sub and I use control pod to adjust bass/volume for the sub.